[PATCH olang] string_view: fix stack buffer overflow on to_u32

[Johnny Richard <johnny@johnnyrichard.com>]

Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
---
 src/string_view.c             | 2 +-
 tests/unit/string_view_test.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/string_view.c b/src/string_view.c
index 084f417..646dabd 100644
--- a/src/string_view.c
+++ b/src/string_view.c
@@ -40,7 +40,7 @@ uint32_t
 string_view_to_u32(string_view_t str)
 {
     char ret[str.size + 1];
-    ret[str.size + 1] = 0;
+    ret[str.size] = 0;
     memcpy(ret, str.chars, str.size);
     return atoi(ret);
 }
diff --git a/tests/unit/string_view_test.c b/tests/unit/string_view_test.c
index 1d8627f..fe3dacb 100644
--- a/tests/unit/string_view_test.c
+++ b/tests/unit/string_view_test.c
@@ -48,6 +48,10 @@ string_view_to_u32_test(const MunitParameter params[], void *user_data_or_fixtur
 
     assert_uint32(string_view_to_u32(str), ==, 69);
 
+    str = (string_view_t) { .chars = "39;", .size = 2 };
+
+    assert_uint32(string_view_to_u32(str), ==, 39);
+
     return MUNIT_OK;
 }
 
-- 
2.44.0